A magnification loupe carried by spectacles has a Galilean lens system
comprising a single-element eyepiece lens and a two-element objective
lens. The loupes may be mounted to eyeglass frames by a flip-up mounting
member, or they may be mounted through the eyeglass lenses of the
spectacles. The loupes provide high magnification while minimizing weight
to thereby reduce strain and discomfort to users. In an exemplary
embodiment, the objective lens has a non-circular shape that provides a
wide field of view while further minimizing the weight of the loupe. A
correction lens may be interchangeably coupled to the loupe housing to
permit selective replacement with another correction lens to vary the
working distance of the loupe.